Rotary engine.



Patented Dec. 25, |900. G. R. IBACH.

ROTARY ENGINE.

(Application tiled Nov, 9, 1899..

3 Sheets-Sheet 2.

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3 Sheets-Sheet 3` (no Model.) (Apphcation Bled Nov. 9, 1899.)

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UNITED 4STATES `PATENT OFFICE.

GIDEON R. IBACH, OF NEW YORK, N. Y.

ROTARY ENGINE.

SPECIFICATION 'forming part of Letters ratent No. 664,480, datedDecember 25, 1906. Application filed November 9,1899. serai No. 736.376.No maar To 1i/Z5 whom it may concern:

Be it known thatI,G1DEoN R. IBACH, a citi- `zen of the United States,residing at New York,

(Brooklyin) in the county of Kings and State of New York, haveinventedcertain new and useful Improvements in Rotary Engines; and I do herebydeclare the following to be a full, clear, and'exact description of theinvention, such as will enable others skilled in the art to which itappertains to make and use the same.

This invention relates to certain new and useful improvements in rotaryengines.

Theinvention has forone object the production of simple and eiiicientmeans for introducingsteam or the liketo the cylinder,where by thepiston is continuously rotated.

A furtherobject is to produce a liquid-valve which is so constructedthat all wear due to friction is automatically taken up and leakagethereby prevented.

A further object is to provide simple and efficient means forautomatically admitting steam or the like to the valve-chamber atpredetermined periods prior to its admission-to the cylinder.

A further object is to provide a new and inl-` proved piston `andconnections between the` same and its carrying-d rum, means beingprovided to automatic-all y take ii p any wear upon said piston.

The invention will be hereinafter fully set forth, and particularlypointed out in the claims.

In the accompanying drawings, Figure 1 is a plan view illustrating myimproved rotary engine. Figs. 2, 3, and 4 are detail views of the mainvalve. Fig. 5 is-a cross-sectional view on the line 5 5, Fig. 1. Fig. 6is a horizontal sectional view on the line 6 6, Fig. 5. Fig. 7 is an endView. Fig. 8 is a sectional View on theline 8 8, Fig. l. Fig. 9 is adetail of the exhaust-outlet. Fig. l0 is a detail view of the auxiliaryvalve. r

Referring to the drawings, A designates the main cylinder, through whichextends a main or power shaft ot, on which is mounted a hollow pistono', carrying the'shoe B. Said piston is provided with a longitudinalslot b, designed to receive the contracted portion b' of the shoe, thelatter being provided with an of said hollow piston.

Said piston is also provided with a Weighted portion a2, opposite to theshoe B and designed to counterbalance the latter. The projecting portionof shoe B is enlarged to form a packing-head b3, which bears against theinner circumference of the maincylinder A, within"`which the piston a'is designed to rotate. In the head b5 is formed a T-shaped slot b4,having an elongated pocket designed to receive a bowed plate-springl,the ends ol which bear against the bottom of packing h6, secured withinslot b4 andlcorresponding in shape thereto. The main cylinder A may beprovided with surrounding water-s paces a4 and also with a series ofexhaustopenings C. By forming the exhaust in series the wear upon thepacking bi and upon the edges of the exhaust-openings is reduced to aminimum. In theends of piston a are formed annular grooves, which aredesigned to receive corresponding, flanges a6 of end pieces a7, thelatter being firmly held against the sides of the cylinder A by means ofcoilsprings o8, located in pockets ai of said grooves. By this means allleakage around the ends of the piston is prevented. Corresponding plates57 extend over the ends of the shoe B and are held against the sides ofthe cylinder by means of springs hs, as shown in Fig. 6

D designates the main valve, on a shaft d, extending through aValve-chamber d', communicating at one side with the cylinder A. Thevalve D is of approximately triangular form in cross-sectionfaudprovided with three concaved faces, the curvature of which is on thesame radius as the inner circumference of the main cylinder Aanddesigned to form a continuation of the latter. Said valve is alsoprovided with a seriesof longitudinal slots d2, of approximateinverted-T shape, in which are fitted packing-strips d3, having enlargedportions d4, corresponding to the shape of said slots. The outer. edgesd5 of said packing-strips are held firmly in contact with the innerwalls of the valveechamber Aby means of bowed plate-springsd, located inwith annular pockets or depressions 17, from which radiate slots orrecesses di. The ends' of packing-strips dsl are also grooved at dalingVcontinuation ofA slots or recesses dg andare designed to receive theradiating arms d10 of a circular or ring-like plate du. Said plates areheld normally against the ends of the valve-chamber by means of-springsdlg, lo cated in recesses d1, formed in grooves d8 and bearing againstthe inner facesof. the arms C112.

valve and its chamber. Said valve-,chamber is provided with aninlet-opening dis, and may .be surrounded by Water-spaces, as shown.

Byproviding the valve D with the concaved faces, as above described, itwill be noted that in theeveut of any one ofjsaid faces becoming untwforuseby reason ot" valve consists of a cylindrical body e3, provided withan annular flange`e4, in which is formed a segmental port or opening e5,designed to register with port (115.

The mainshaft ais extended through suitable stuffing-boxes F F, theformer having a spur gear-wheel ff loosely mountedthereon andprovidedwith a cam-groove]a2 in its outer face. Said gear meshes with a pinionf3, keyed to a shaftf4, mountedin suitable bearings f5 and having at itsother end a second gear-,Wheelf lwhich is 'rotated by means of aypinionf7, meshing with a gear-wheelfs, keyed to shaft a. Meshing with a piniong, keyedto the outer end of shaft d of the main valve, isa toothedsegment g', formed on one arm of. abell-crank lever G, pivoted at g2 to`asnitable support, the other end 0E said bellcrank lever carrying a ping3, fitting-within the cam-groove j? of gearfwheel f; On the oppositeendof shafta is keyed a pinion h, which meshes with a correspondingpinion h', keyed .to a sleeve h2, loosely7 mounted on'` an arm orlprojection h3 of main cylinder A. Tothe outerend of sleeve h2 is keyedan eccentric H, having diverging arms h4, the ends ofvwhich are-unitedbya plate 77,5. The eccentric H is providedwith a curved slot h6,

in which works a set-screw7 71,7, whereby the samemay be adjusted to anydesiredangle, and thus regulated4 to cut 0E the supply ofv liquidat. anypoint. Av bell-crank lever I is keyedto the projecting end of shaft e2,one

endofsaidil'ever being connected by an arm orpinion t' to a dash-pot t",the other arm thereof. havinva slot i2 in its end in which is mounted aspring-pressed dog 3, having a laterally-projecting pin 4, designed toengage a curved guide t5, secured to the main cylin- By this means atightfjoint isy maintained between the ends of the main ftion indicatedin Fig. 5.

der. This guide is adjusted at willl by means ef'a slot and'setscrewconnection t6. An arm t7 is loosely mounted on one end of shaft e2,

'the other end thereof being pivoted to plate vsegment of the latter,.through the medium of gear g, Ical'lses said valve to move tolthe posi-As this transpii'es the momentum of the piston carries the same beyondthe valve, allowingsteam or thelike alreadyl within the cylinder to.passV out through exhaust C. By the time the piston has passed, thevalve the cam-groove f2 has caused` lever G to return to itsnormalfposition, thereby moving the main Avalve to the positionindicated in dotted lines, Fig, v5. When the'valve is in thisposition,Vsteam or the `like isadmitted from port d1? into cylinder as to therear of the shoe of the piston B, exerting the necessary pressure, to`cause another revolution thereof. Simultaneous with thisaction theeccentricH causes the lug 758 to engage dog 3, moving the saine soas .tobring the pin tinto engagement With'the4 guide t5, thus causing the port@5.06 the valve e', to register with the openingdli?inthevalvechamber,thereby admitting steamer the like to the latter. edepressed the dogis, so thatthe saine will disengage itself from lug 8,allowingvalve e' to return to its normal position, thus cutting o, theshock of the return of saidvvalve' being brokenby the dash-pot t',asfusual.

From what has been said it will be obsei ved that my improved rotaryengine is exceedingly simple and inexpensive, andbeing composedof butfew parts is notlia-ble to readily getlo'ut ofV olf-derer becomederanged. ItV will be particularly observed that steam or the like visautomatically ad mittedrto the cylinderjustafter the piston passes themain valve, and the latter is so'construoted that allleakage isprevented and any wear dueto friction istaken up automatically. Anotheradvantage `lies in the construction of the piston and its shoe, wherebyanew'` shoe may bev readily substituted withexpenditure ofv but a minimumamount of time and labor.

I claim as my inventiony l. In a rotary engine, amain cyli der, a pistonmounted thereinvand having a longitudinal slot, a shoe having anenlarged head and a contracted portion fitting within said sloty andprovided with inner bearing-shoul- `ders, and means for` admitting steamor the klike to said cylinder.

2. In a rotary engine, a main cylinder, a rotary piston mounted thereinand having a longitudinal slot, a shoe secured rwithin saidA slot andprovided with inner bearingfshoulders andan outer enlargement having alongitudinal T-shaped slot, a' packing-strip A t this stagetheguide hasICC IIO

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- tween the bottom of said slot and the under side of said packing, andmeans for admitting steam or the like to said cylinder. 1

3. In a rotary engine, a main cylinder, a

hollow cylindrical piston mounted therein and provided with alongitudinal slot, a shoe having acontracted portion fitting Within saidslot, and provided with bearing-shoulders fitting against the innerperiphery of said piston, a spring-pressed packing-strip carried by saidshoe, and means for admitting steam or the like to said cylinder. A

4. In a rotary engine, a main cylinder, a hollow cylindrical pistonmounted therein and having a longitudinal slot, a shoe secured Withinsaid slot and also having a longitudinal slot, said shoe-havingshoulders bearing against the inner periphery of said piston, apacking-strip located in the slot of said shoe,

a spring interposed between said packingstrips and the bottom of saidslot, and means for admitting steam or the like to said cylinder.

5. In a rotary engine, a 'main cylinder, a rotary piston mounted thereinand having a longitudinal slot, said piston having annular grooves inits ends, a shoe secured to the slot in said pistonend plates havinglianges litting in the grooves of said piston, springs bearing againstsaid end plates, corresponding end plates carried by said shoe, andmeans for admitting steam or the like to said cylindex'.

v6. In a rotary engine, a main cylinder, a rotary piston mounted in saidcylinder, a rotary main valve of approximately triangular form arrangedto control the admission of steam or the like to said cylinder, thelongitudinal faces thereof being concaved on the same radius as theinner circumference of said cylinder, whereby when one of said facesbecomes unfit for use by reason of Wear, the remaining faces may besuccessively presented, and means operated by said piston forautomatically operating said valve.

7. In a rotary engine, a main cylinder, a rotary piston mounted therein,a main-valve chamber communicating with said cylinder, a main valve ofapproximately triangular form and carrying spring-pressed packingstrips,the longitudinal faces of said valve being concaved on the same radiusas the inner circumference of said cylinder,whereby when. one of saidfaces becomes worn, the remaining faces may be successively presented,and

. means for admitting steam to said valvechamber.

8. In a rotary engine, a main cylinder, a rotary piston mounted therein,a main-valve chamber communicating with said cylinder, a main valve ofapproximately triangular form provided with longitudinal grooves, thelongitudinal faces of said valve being concaved on the same radius asthe inner circumference of said cylinder, whereby vvhqn one of saidfaces becomes worn or otherwise unfit for use the remaining faces may besuccessively presented, spring-pressed packingstrips located in saidgrooves, means for rotating said,J valve, and means for admitting steamor the like to said valve-chamber.

9. In a rotary engine, a main cylinder, a rotary piston mounted therein,a main-valve chamber communicating with said cylinder, a main valvemounted therein and having longitudinal grooves formed therein andprovided with lateral enlargements, packingstrips located in saidgrooves and having shoulders fitting Within said enlargements, springsbearing against said packing-strips, means for operating said valve, andmeans for admitting steam or the like to said mainvalve chamber.

10. In a rotary engine, a main cylinder, a rotary piston mountedtherein, a main-valve chamber communicating with said cylinder, a mainrotary valve mounted therein and having radiating recesses formed in itsends, spring-pressedplates located in said recesses, means for rotatingsaid valve, and means for admitting steam or the like to said mainvalvechamber.

ll. In a rotary engine, a main cylinder, a

rotary piston mounted therein, a main-valve chamber communicating withsaid cylinder) a main valve mounted therein having recesses formed inits ends, said recesses being provided With pockets or depressions,coilsprings located in said pockets or depressions, plates located insaid grooves or recesses and engaged by said springs, means for rotatingsaid main valve, and means for admitting lsteam or thelike to saidcylinder.

Vsaid plates, means for rotating said main valve, and means foradmitting steam or the like to said main-valve chamber.

13; In a rotary engine, a vmain cylinder, a rotary piston mountedtherein, a main-valve chamber communicating with said cylinder, a mainvalve located in said chamber and having longitudinal grooves,packing-strips secured in said grooves and having grooves formed intheir ends, said valve having annular pockets in its ends provided withradiating slots or recesses in alinement `with the slots or groovesformed in said packing, a ring-like plate fitting in each of saidannular pockets and having radiating arms corresponding to said slots orrecesses, springs bearing against said plates, means for rotating saidvalve, and means for admitting steam or the like to said valve-chamber.

14. In a rotary engine, a main cylinder, a

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rotary.v piston mounted. therein, aKV main-valve chamber communicatingWith saidscylinder, amaiu valvelocatedtherein, means forA automaticallyrotating the same, an auxiliaryvalve chamber arranged on a horizontalplane with, said main-valve chamber, a partitionwall separating saidvalve-chambers and havinga port or opening, a shaft mountedA in saidauxiliary-valve chamber, a. valve keyed to said shaftand provided with aflange hav/- ing a port-designed to register with said port or opening,and means for r'ockingsaid shaft. i

15. I-n a rotary engine, a main, cylinder, a main shaft mounted in saidlcylinder, a rotary piston keyed to said shaft-,andiA located Withinsaidcylinder, a main valve arranged to control the admission of steamvor thelike tosaid cylinder, a cam-Wheel'loosely mountedzon aprojectionof said main cylinder, gearing operatedfby said main shaftand'meshingWith saidcam-Wheel, and: a lever operated by said earn-wheel arranged to-reciprocate said main valve.

16. In a rotary engine, a main cylinder, a main shaft mounted in said:cylinder, a rotary piston keyed to said shaft and located within saidcylinder, a main-valve chamber communicating with saidcylinder,` avshaftgomounted therein, a main valve. keyed to said shaft, a pinion alsokeyed-toY said shaft, acamwheel -looselymou nted onsaid main-cylinder,

gearing operated by' said` main shaftv and meshing with saidk cam-wheel,and a bell-` crank lever pivoted to said main cylinder and havinga-toothed' segment at one end-'inengagement with thepinion o f saidmain-valve shaft, the opposite end of said bell-crank lever being inengagement With said cam-wheel and operated thereby.

17. In a rotary engine, a main cylinder, al

ed in the auxiliary-valve; chamber, a valvey keyed thereto, an armprojecting from said main cylinder,a sleeve loosely mounted thereon andcarrying a pinion, a second pinion meshing therewith and keyed to saidmain. shaft, an eccentric keyed to said sleeve, and connectionsbetweensaid eccentric and sai auxiliary-valve shaft.

18. In a rotary engine, avmain cylinder, a

rotary piston mounted therein, a main-valve chamber communicating withsaid cylinder,

ya main valve mounted therein, means forrotating the same, anauxiliary-valve chamber,

communicating with said main-valve chamber, ashaft-.mounted in theformer, a valve keyed to said shaft, an eccentric operated by saidpiston, a lever keyed to said valve-shaft and designed to be engaged vbysaid eccentric,

and, means for automatically. dis en, ;aging'k saidbell-crank lever fromsaid-eccentric.

19. Ina rotary engine, a main cylinder, a

rotary piston mountedtherein` a main-valve chamber communicating withsaid cylinder, a main valve mounted therein, means for roratingj thesam'e, an auXiliary-valvechamber communicating withA saidmain-valvecham'- ber, avshaft, mounted in the former, a valve keyed tolsaid shaft,an eccentric operated by vber, ashaft mounted in :the: formelga valvekeyed to said shaft, an eccentric operated by said piston and havingdiverging. arms, a plate connecting theA ends ofy saidfarms, an arm ormember loosely mountedV on saidgauxiliary- Valve shaftand pivotallyconnected to said plate, a lever keyed to saidvalve-shaft and designedto rbe engaged by said.v arm or member, and means for automaticallydisengaging said lever from'said armor member.

21. In a rotary engine, a maincylinder, a rotary piston mounted therein,a main-valve chambercom m unicatingwith said cylinder, a main valvemountedv therein, meansI for op, erating the same, anauxiliary-valvechamber communicating Withsaid main-,valve chamber, ashaft-,mountedin theformer, a. valve keyed to said shaft, an eccentricoperated by said piston, a lever. keyed to said auxiliaryvalve shaft andhaving a spring-pressed dog, an arm loosely mounted on saidvalve-shaftand pivotally connected- ,to .said eccentric, a lug carried by said armand designed To engage said dog, and means for automatically disengagingsaid dogvfrom. said lug.

22, Inra rotary. engine, a main cylinder, a rotary piston'mountedtherein, a Vmain-valve chambercommunicatingwith said cylinder, amainvalve mounted therein, meansfor operatin g the same,ananxiliary-valvechamber communicating with said main-valve chamber, ashaft mounted inthe former, avalve keyed to said auxiliary-valve shaftand having a spring-pressedrdog provided with a lateral pin, an armloosely mounted on said shaft and pivotally connected to saideccentric,a lug carried by said arm and designed.

rotary piston mounted therein, a main-valve` chamber communicating withsaid cylinder, a

IOO i IIO main Valve mounted therein, means for 0perating the sam e, anauxiliary-valve chamber communicating with said main-valve charnber, ashaft mounted inthe former, a valve keyed to said shaft, an eccentricoperated by said piston, means 4for adj ustiny.r the same, a lever keyedto said auxiliary-valve shaft and having a spring-pressed dog, an armloosely mounted on said shaft and pivotally connect- Io ed to saideccentric, saidarm being designed to engage said dog, a curved guidedesigned to depress said dog, and means for adjusting said guide.

In testimony whereof I aiix my signature in the presence of twoWitnesses.

GIDEoN R. IBAGH.n

Witnesses:

A. B. HUToHINsoN, ERNEST H. WAY.

